Fast and wide tuning range wavelength-swept fiber laser based on dispersion tuning and its application to dynamic FBG sensing
Fast and wide tuning range wavelength-swept fiber laser based on dispersion tuning and its application to dynamic FBG sensing
复制标题
DOI：
10.1364/oe.17.008310
复制
发表时间：
2009-05-11
期刊：
影响因子：
3.8
通讯作者：
Yamashita, Shinji
中科院分区：
文献类型：
--
作者：
Nakazaki, Yuichi;Yamashita, Shinji
报道了一种高速、宽调谐范围的波长扫描光纤激光器及其在光纤传感器中的应用。该激光器基于色散调谐技术，不需要在激光腔中使用任何光学可调谐滤光器。通过直接调制半导体放大器和调节腔内色散，获得了178.7 nm的宽波长调谐范围和200 kHz以上的快速调谐速率。将波长扫描光源应用于动态光纤布拉格光栅传感系统。给出了150 Hz正弦应变的动态测量结果，测量速度可达40 kHz。(C)2009年美国光学学会
We report a wavelength-swept fiber laser with high speed and wide tuning range, and its application to fiber sensors. The laser is based on the dispersion tuning technique, which does not require any optical tunable filter in the laser cavity. By directly modulating the semiconductor amplifier and adjusting the dispersion in the cavity, a wide wavelength tuning range of 178.7 nm and a fast tuning rate of over 200 kHz are obtained. The wavelength-swept laser source is applied to a dynamic fiber Bragg grating sensing system. Dynamic measurement of a 150 Hz sinusoidal strain is demonstrated with a measuring speed as fast as 40 kHz. (C) 2009 Optical Society of America